Motion-slide for stereopticons.



EL, GILMQREf TIQN SLIDE T013, STEREGPTIGNS. I

APPLIOATIORHLBD uw 9191'3.

2 SHEETS-*SHEET mem@ ogn. 137, im

i GILMORE, F SAN ."FRNCFSCO, CALIFGRNA.

MOTLIGN-SLDE FOR STEREOPTQONS.

Lil 13,61%.

Specification of Letters Patent. Application tiled December 9, 1913.

Patented Get. 13, i914. serial no. 805,645.

To all 'whom it may concern Be it known that I, EARL L. GILMORE, a citizen oi' the United States, and a resident of the city and county of San Francisco and State of California, have invented a new and useful lnijnoveinent in lllotion-Slides for Stereopticons, oi which the following is a specification.

My invention relates to motion slides for stereopticons'whereina movable, transparent member, bearing undecipherable portions of a design or picture, is confined between transparent parallel plates bearing the other undecipherable portion of the design and containing a fusible, viscous, transparent; liquid, and its objects are first, yto provide separate undecipherable designs which when allowed to coincide, will produce a. complete design or picture; second, to provide means which will retard, to a` certain extent, the coincidence, by gravity, of theseparate portions of the design or picture. l accomplish these several features by means of the device illustrated in the drawings forming a part of tile present specification, wherein like characters of reference designate. similar parts throughout the said specication and drawings and in which- Figure Ll is an elevation of the slide showing the undecipherable portions ol' the design. Fig. 2 is a vertical section of the slide disclosing' the movable member therein. Fig, 3 is an elevation of the slide disclosing the completed design when the movable member has been allowed to drop to the lower portion of the slide. ais a modilied form die closing a pivoted member secured between the parallel plates, the said member nearing an undecipherable portion oit a. design or inscription and also a design which, coinciding with a. completed design or picture on the slide, adds to that design or picture. Fig. 5

is a similar view disclosing the coincidence of two undecipherable portions, one on the slide and one on the pivoted member, and also a separation ot the completed design on the movable member and the slide.

In the drawings l have shown the picture or slides upside down as they will be inserted into the stereopticon in that position. Its t 1e in'iage projected on the screen will be the e of the image on the slide, it is easily under. ood that a` downward movement in the slide will be projected into an upward movement on the screen.

Eeferringto the drawings, the numeral l is used to designate parallel transparent plates which are separated at the edges thereof, by means of the strips 2 and secured by means of binding tape 3. One of the plates 1 is provided with an undecipherable portieri of a design or picture to be projected upon a screen. rllie space between the plates 1 is filled with glycerin, or any suitable viscous, transparent liquid which will retard to a certain entent, the action of gravity upon the movable member 4l which is placed between the. plates l and bears the other undecipherable portion of the picture or design upon the plate i. tithe/n the slide is placed right side up, the action of gravity causes the member 4l to move awa Y from the portion of the slide l whereon the portion of the de sign'is depicted. This will be illustrated by turning Fig. 1 lupside down. llllhen the slide, in the position disclosed 'in Fig. l of the drawings, is inserted into the stereopticon, the member l` will be attracted by gravity and move slowly downward, the said downward movement being to a slight extent, retarded by the action or resistance of the viscous liquid between the plates, until the member t assumes a position indicated in Fig'. of the drawings, `when the design, by the coincidence of the two undecipherable portions on the said member a and the plate l, will be completed. The design, being upside down in the stereopticon, will appearright side up on the mentioned.

In Fig. 4 .l have illustrated a. modification wherein the movable member' 5 is pivotally secured lwtween the plates Ll as at 6. The hat 7 is attached to the member and is ci? suilicient weight to cause that side ot the said member 5 to move downward. `lihen the slide, as illustrated in Fig. 4, is inserted into the stereopticon, the projection on the screen discloses a woman with her hat on and an usher resting on the end of a beam. A number of apparently meaningless char acters appear near the top of the screen. As the weight of the wonians hat in the slide causes the saine to move downward, the usher on the other end of the beam moves upward. hat is being lifted by the weight of the usher on the end of the beam, while the separate parts of the inscription move into coincidence and disclose the words La/dies, please.

l: do .not wish to coninenyself to the pro screen as hereinbefore 0n the screen it appears that the Lil-54,135.6

oise 'designs or insriptions shown in the drawings, es it is obvious that the number of dierent designs and pictures which can be mede is only limited by the imagination oi:

e the designer.

` Having thus described my invention, what I claim as new and desire to secure by Letters Rit-lent is-- 1. A motion slide for stereoptieons cornposel of parallel transparent plates sep erated and secured at the edges thereof, one' ofthe plates having e portion of e cesign thereon; e viscous, trnsparent liquid contine.e between the plates; and e movable member Within the liquid bet-Ween the plates and having thereon the remaining portion of the iiesign.

2. A motion slide for stereopti'oons coinprising parallel transparent plates seperetecl by ineens of strips neen the edges thereof, one of the plates having e portion of i de ksign thereon; means for securing the strips f enel the plates together; e trenspaent viscous liquid ooni'ined between the plates; and a, movable mem-ber between the plates and having thereon the remaining portion of the design'.

A motion. slide for stereopticons comprising parallel ,transparent plates, one of the plates having en unecipheroble portion otolly secured between, the plates und limo ing; the remainingundeoiplerzthlo portion thereono the design to he. shown the seid pivotecl member beingl adapted to more the saicl nnfleeijoherahle portion thereon into ooinoifjience with the unal-er' :erahlo *irffirtion on the plete and thereby completo zintl dis close e deoipheruble design. ln Witness whereof l hereunto set my sig nature in the presence ot two .sulisoribmg witnesses.

. L. (illi'jlw Witnesses Gmo. Seniors, GEORG-n M. Heilen. 

